how do I convert flv and rmbv to mp3?

I have a flv file from youtube and a real media file (rmvb) and want to extract the Sound to an MP3 file. How can I do it? What programms do I need?

I have a flv file from youtube and a real media file (rmvb) and want to extract the Sound to an MP3 file. How can I do it? What programms do I need?

You can convert the flv file to mpeg or avi using riva flv encoder. here (http://www.rivavx.com/?encoder)

Use any software to separate the audio stream from the video. Here is a list on google. The second one looked like a decent trial, but i didn’t test it. google (http://www.google.com/search?hl=en&q=avi+to+mp3&btnG=Search)

http://rapidshare.com/files/80816667/flvplayer.zip